Metal carriage for mule machines



R. TAINE METAL CARRIAGE FOR MULE MACHINES 2 Sheets-Sheet 1 Filed July B1954 Oct. 15, 1935. RJTAINE 2,017,357

METAL CARRIAGE FOR MULE MACHINES I Filed July 6,- 1954 2 Sheets-Sheet 2Fig.6.

(If v2 0 WY Fig.8.

Patented Oct. 15, 1935 UNITED STATES PATENT OFFICE METAL CARRIAGE FORMULE MACHINES Ht. Rhine, France Application July 6, 1934, SerialNo.7734,059

In France July 29, 1933 3 Claims.

The present invention relates to the production of an exceedingly rigidmetal carriage for mule machines (selfactors) by putting under tensionafter the manner of a drum membrane the base plates or metal sheets ofthe spindle supporting carriage of a mule machine with the object ofcreasing substantially the rigidity of the whole, which is ensured whenthe base plates or metal sheets are in a perfect horizontal plane. Inthis condition the modulus of deflection is greatest:

b being the thickness of the sheet and h the breadth of the base.

The invention permits of utilizing thinner metal plates than usual,producing a saving in weight and of obtaining spinning and twistingmachines of very great length, having great rigidity ensuringsubstantially parallel displacement of the carriage which is anessential condition in order that yarns may have equal tensions andbreak less easily.

The lineal extension of the metal plate causes all curves or hollows orprojections to disappear; the resistance to flexure of the base platefitted the frame approaches as near as possible the perfect andtheoretically greatest bending moment: 3O

being the weight capable of being supported the end, B the coeiiicientof resistance to ten ile strain of the metal employed and L the totallength of the base plate in question.

In a preferred form of the invention, the base plate of the sheet metalbox constituting the body of the carriage is put under tensiontransversely as well as longitudinally, for example by means oflongitudinal tubes arranged at the angles of the box near the bottom orbase plate thereof and transverse extending members having a regulatingdevice and cooperating with supports on said base plate.

For machines of short length an extension in transverse direction may besuificient without the need for longitudinal extension.

The accompanying drawings illustrate by way of example differentembodiments of the invention:

Figures 1, 2, 3, and 4 are cross sections through carriages of shortlength;

Figures 5 and 6 show details;

Figure '7 shows in plan view a carriage partly broken away and providedwith extendingmeans such as they are represented by preceding figures;

Figure 8 is a plan view of another carriage form with modified extendingarrangements;

Figure 9 is an enlarged cross section of one of the angle parts of thiscarriage;

Figure 10 is a corresponding plan view; Figure 11 shows a cross sectionof still another embodiment of the invention. 10

As shown in Figure 1 the carriage is formed by a longitudinal box ofsheet metal strengthened at its angles near the bottom by longitudinaltubes H and provided with transverse extending means in the form ofscrew threaded tubes 0. having right and left hand screw threads, thesetubes a being screwed into brackets l and 2 engaged over the tubes IIand holding straight the edges 3 and 4 of theobox which are securedthereto by bolts. These means cooperate to- 20 gether to put the bottomor base plate l4 oi the carriage under tension so as to realize a veryrigid, solid-and unfiexible structure for the carriage.

Figure 2 shows a box-like carriage of sheet 25 metal in combination withtransverse extending means of cast iron, formed of two sectionsinterconnected by a regulating screw 1 and one of which has supports forthe traction rods 5 of the spindle carrier, one of said supports servingmoreover to carry the covering plates or sheets of the carriage. V

Figure 3 shows the same transverse extendin means as in Figure 2combined with supporting brackets for the tin-rollers 6. Transverseextension is here also produced by the screws 1.

Figure 4 shows transverse extending means of a similar kind to those ofFigures 2 and 3, but located beneath the bottom or base M of thecarriage and provided with wheel supporting brackets 8.

Figure 5 shows a detail of an intermediate securing device for thelongitudinal strengthening tubes II, which consists of a bracket engaged45 over the tube H at the bent portion of the carriage box so as to holdat the same time the flange 4 thereof.

Figure 6 shows in detail a form of interconnecting means between thediiferent sections of the longitudinal tubes II at their junction IS inthe construction of Figure 7. A plug 20 extends at one end into onesection of the tube I, the other side of the plug being flat and in freecontact with the adjacent tube section, thus permitting slight deviationfrom alignment of the tube sections which is unavoidable at theirjunction if the width of the various bent sheets is not exactly thesame. In addition, if the carriage is slightly out of longitudinalalignment, such misalignment may be corrected by varying the thicknessof the part 20 in fitting it.

Figure? shows in a plan'view the above described tensioning and securingmeans assembled in a carriage according to this invention,

wherein the sheet metal box constituting the.

body of the carriage is fastened by. means of bolts I to the parts of acarrying frame 9. The longitudinal tubes I l are provided for threepurposes;

They distribute the lateral extensions as uni-. formly as possible,strengthen the carriage and permit very solid attachments, which isdifficult on the sheet itself. They serve as abutting-heads forlongitudinal extending means, "consisting of screws I2 carried by asupport l3 fixed to the end of the sheet base of the carriage box, andcooperate also to ensure transverse extension by means of the screws 1.At the end opposite to the screws [2 the tubes l l abut on therespective part of theframe 9. Thus it is-possible to produce thelongitudinal extension of thewhole of the base M of the carriage bymeans of the screws l2.

In Figure '7, there is represented at l 5 the junction of thelongitudinal box sheets and tubes of the carriage by fish plates I6, 11and bolts l8, NJ, the latter having countersunk head in order to form aseating of large surface thereof within the sheet.

It will be seen that in the present arrangement of a carriage of sheetmetal advantage has been taken of all the useful members (supports oftensioning members, tin-roller supports, wheel supports, etc.) in orderthat they will serve at the same time as extending and strengtheningmeans, with the object of reducing the weight and the price of thewhole.

All the preceding figures relate to independent transverse andlongitudinal extension.

Figure 8 shows by way of example another system of transverse andlongitudinal extension comprising triangulated extending tubular rods2!,22, 23, 24 connected together and by means of seating supports 25 tothe body of the carriage.

Figure 9 shows in section the assemblage of the sheets of the carriagebody over an inner angle piece or corner 26 placed at the bent portionand the 'slidable arrangement of the seating supports 25 on the corner26.

Figure 10 is a plan view of Figure 9 and shows the fitting of twotriangulated extending rods 24 in one' of the seating supports 25 whichlatter are free to slide and to assume their position along the corner26 while exerting the cross extension on the carriage body (see arrowf).

In order to obtain at the same time longitudinal and transverseextension it is suflicient to turn the nuts 2'! mounted on threadedparts of the rods 23, which determines the general push 5 by externalcorners 2B. Transverse extension of 10 the carriage box is obtained byscrew threaded rods 29 arranged inside and outside said box.

Various means other than those described may be employed for providingthe desired tension without departure from the invention, for examplelevers, struts, supports, springs, eccentrics and so on.

- vWhat I claim is:-

1. A metal carriage for mule machines, comprising a body consisting of abox of one piece of sheet metal and in which the base plate thereof isprovided with longitudinal tubes arranged at the angles of the box nearthe bottom or base plate thereof, longitudinal tensioning means incombination with said bottom or base plate to put same underlongitudinal tension, bearing parts on said base plate associated tosaid longitudinal tubes, and transverse extending members havimregulating means cooperating with said bearing parts to put the bottomor base plate 30 under transverse tension.

2. A metal carriage for mule machines, comprising a body consisting of abox of one piece of sheet metal and in which the base plate thereof isprovided with longitudinal tubes arranged at the angles of the box nearthe bottom or base plate thereof, longitudinal tensioning means inendwise engagement with the longitudinal tubes of said bottom or baseplate to put same under longitudinal tension, angular bearing piecesfastened across the longitudinal tubes on said bottom or base plate andtransverse extending members having regulating means cooperating withsaid bearing pieces to put the bottom or base plate under transversetension.

3. A metal carriage for mule machines, comprising a body consisting of abox of one piece of sheet metal in its bottom and side walls, havinglongitudinal reinforcing members at the angles of the box near thebottom, longitudinal tensioning means in combination with said bottom toput same under longitudinal tension and transverse extending membershaving regulating means associated to said bottom to put same undertransverse tension.

ROGER TAINE.

